© 2017, Pleiades Publishing, Ltd.We study properties of particles with zero or negative energy and a nonzero orbital angular momentum in the ergosphere of a rotating black hole. We show that the sign of the particle energy ...

© 2017, Springer Science+Business Media, LLC, part of Springer Nature. We consider a particle falling into a rotating black hole. Such a particle makes an infinite number of revolutions n from the viewpoint of a remote ...